Steam-generator.



' No. 719,501. PATENTED PEB. 3 1903.

.STEAM GENERATOR.

APPLICATION FILED AUG. 14, 1902. Y0 IODEL. l 2 SHEETS-SHEET 1- QZ/265565. fwefza @fmf 7PM/Zay Af. a. @MAA ay als ./orng PATBNTED PEB. 3, 1903.

H. E. PENNEY. STEAM GENERATOR. .APPLIO-T-ION FILED AUG.14, 1902.

2 SHEETS-SHEET 2.

'I0 MODEL.

, 25V. d; www" UNTTED STATES PATENT OFFICE.

HERBERT E. PENNEY, OF MINNEAPOLIS, MINNESOTA, ASSIGNOR TO W. S. NOTT COMPANY, OF MINNEAPOLIS, MINNESOTA, A CORPORATION.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 719,501, dated February 3, 1903. Application tiled August 14,1902. Serial No. 119,656. (No model.)

To a/ZZ whom t may concern:

Beit known that I, HERBERT E. PENNEY, a citizen of the United States, residingat Minneapo1is,county of Hennepin, and State of Minnesota, have invented certain new and useful Improvements in Steam-Generators, of which the following is a specication.

My invention relates to vertical steam-generators or steam-boilers of the sectional water-tube type.

The objects of the invention are to dispense with one of the usual vertical shells and substitute for thewater-leg a series of horizontal headers and uprighttubes in circular arrangement and fill the combustion-chamber with concentric tubesections, and thereby produce an efficient steam-generator. The headers are sectional and, together with the tubes, are arranged in manifolds or tube-sections that are separately removable.

My improvements are illustrated in the accompanying drawings, in which- Figure 1 is a vertical sectional View of a steam generator embodying my improvements. Fig. 2 is a horizontal section of the same on the line w w of Fig. 1. Fig. 3 is a top View on the plane of the line @c of Fig. 1, and Figs. 4 and 5 are enlarged detail views of the upper and lower headers and their pipe connections. Y

In the drawings, 1 designates -an inclosing shell; 2, the smoke-stack; 3, the hood over the top of the generator; 4., the fire-grate, and 5 the fire-door. These features may be of any usual or suitable construction.

In the lower portion of the shell, at or near the level of the grate, is a water-drum, cornposed of a series of horizontal segmental headers or sections 6, connected together in a circ'le by short coupling-pipes 7 and providing the water-space of the generator. .A supplypipe 8 is connected to one of the headers 6 at any desired point. To the top of the headers of the water-drum is connected a series of vertical pipes 9, that connect with the under sides of a series of upper headers 10, which preferably correspond in form and arrangement with the lower headers 6 and which constitute what may be termed a steam-ring,

and the pipes 9 are for the return of water from the steam-ring to the water-drum. The pipes 9 may be placed as close together as desired to prevent the escape of any great amount of heat from the combustion-chamber within their circle.

Over the tire-box are arranged series of concentric segmental headers 11 and at the center a hollow header-ring 12, to which are con` nected vertical water-tubes 13, which in turn communicate with corresponding headers 14 and a similar central ring 15, placed at the top of the boiler, within the steam-ring. The headers of these series are not in communication with other headers of the same series; but each header is independent, except in respect to the tubes 13,that connect corresponding headers above and4 below to constitute a manifold or tube section.

Each lower header is connected bya coupling-pipe 16 to a Water-drum section,and each upper header is provided with a suitable removabletbent-pipe connection 17, adapting it to discharge into the steam-ring. The pipe connections 16 and 17 may be of any usual or suitable construction adapted to 'oe conveniently disconnected to permit the removal of a tube-section. Y y

A steam-drum 18 of any desirable form (shown in the drawings as a short upright cylinder) is arranged centrally over the series of manifolds. The sectionsor headers 1() of the steam-ring are connected with the lower portion of the steam-drum by pipes 19, and a steam-discharge pipe 2O is connected to its upper portion. This construction enables any section of the water-drum and steam-ring to he readily removed by disconnecting its coupling-pipes 7, 16, 17, and 19, and so,too,tl1e interior tube-sections are made separately removable by disconnection of their couplings 16 and 17.

In operation water is supplied from the water-drum to the lower headers of the tubesections, and when steam is generated it rises through the tubes to the upper headers of the tube-sections and, together with whatever water it may carry over, discharges downward into the headers of the steam-ring, the steam passing off through the pipes 19 to the drum and the Water flowing directly downward through the return-pipes 9.'

Having described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In a steam-generator, thecombination with an inclosing shell, a water-drum com posed of segmental sections, a steam-ring composed of corresponding sections, a series of return-pipes connecting such drum and ring sections,ofinterior series ofindependenttube sections the lower headers of which communicate with the water-drum and the upper ends of which communicate with the steamring, a steam-drum, and connections between it and the steam-ring, substantially as set forth.

2. In a steam-generator, the combination with a cylindrical inclosing shell, of a waterdrum and steam-ring com posed of corresponding detachable comm unicating sections of segmental form, a circularly-arranged series of vertical return-pipes connecting said drum and ring sections, interior concentric series of tube-sections composed of upper and lower independent headers and vertical connecting water-tubes, and detachable connections between such tube-sections and the water-drum and steam-ring, substantially as set forth.

3. In a steam-generator, the combination with a cylindrical inclosing shell, of a waterdrum and a steam-ring each consisting of communicating segmental headers, a circular series of vertical return-pipes connecting them, interior concentric series of tube-sections composed of upper and lower independent headers and Vertical connecting water-tubes, de-

` tach'able connections between the lower ends of the tube-sections and the water-drum and between their upper ends and the steam-ring,

a centrally-located steam-drum above the tube-sections,and pipes connecting such drum with the steam-ring, substantially as set forth. 4. In a steam-generator, the combination with a cylindrical inclosing shell, of a waterdrum and a steam-ringeach consisting of coinmunicating segmental headers, a circular series of vertical return-pipes connecting them, the water-drum and return-pipes serving to water-jacket the lire-box, interior concentric series of tube-sections arranged over the firebox and consisting of upper and lower independent headers and Vertical connecting water-tubes, and detachable connections between such tube-sections and the water-drum and steam-ring, substantially as set forth.

5. In a steam-generator, the combination with a cylindrical inclosing shell, of a waterdrum and a steam-ring each consisting of com- 'municating segmental headers, a circular series of vertical return-pipes connecting them,

the water-drum and return-pipes serving to water-jacket the hre-box, interior concentric series of tube-sections arranged with their lower ends immediately above the fire-box and their upper ends about on the plane of the steam-ring, and consisting of upper and lower independent headers and vertical connecting water-tubes, and detachable connections between such tube-sections and the water-drum and steam-ring, substantially as set forth.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 7th day of August, 1902.

HERBERT E. PENNE Y.

Witnesses:

P. H. GUNCKEL, H. A. BowMAN. 

